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Cheap flights from South Dakota to Idaho Falls from $274

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to Idaho Falls departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from South Dakota to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 1:30 pm
RAP
-
IDA
6h 30m
1 stop
United Airlines Logo
2:40 pm - 8:44 pm
IDA
-
RAP
6h 04m
1 stop
$274United Airlines
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
2:45 pm - 9:06 pm
RAP
-
IDA
6h 21m
1 stop
United Airlines Logo
6:36 am - 1:13 pm
IDA
-
RAP
6h 37m
1 stop
$309United Airlines
Sat, Mar 21 - Sat, Mar 28
United Airlines Logo
8:30 am - 1:30 pm
RAP
-
IDA
5h 00m
1 stop
United Airlines Logo
5:30 pm - 9:57 pm
IDA
-
RAP
4h 27m
1 stop
$475United Airlines
Sun, Mar 15 - Tue, Mar 17
United Airlines Logo
5:00 am - 9:56 am
RAP
-
IDA
4h 56m
1 stop
United Airlines Logo
10:40 am - 9:36 pm
IDA
-
RAP
10h 56m
2 stops
$1,020United Airlines
Sat, Mar 21 - Sun, Mar 29
Delta Logo
11:03 am - 6:15 pm
RAP
-
IDA
7h 12m
2 stops
Delta Logo
1:10 pm - 10:25 pm
IDA
-
RAP
9h 15m
2 stops
$1,641Delta
Sun, Mar 15 - Tue, Mar 17
Delta Logo
11:03 am - 6:15 pm
RAP
-
IDA
7h 12m
2 stops
Delta Logo
5:45 am - 3:18 pm
IDA
-
RAP
9h 33m
2 stops
$1,656Delta
Sat, Mar 21 - Sat, Mar 28
Delta Logo
11:03 am - 6:15 pm
RAP
-
IDA
7h 12m
2 stops
Delta Logo
5:45 am - 3:18 pm
IDA
-
RAP
9h 33m
2 stops
$1,672Delta
Sat, Mar 21 - Sun, Mar 29

United Airlines flights from South Dakota to Idaho Falls

Our best United Airlines deals on South Dakota to Idaho Falls flight tickets
United Airlines
Feb 21
RAP7:00 amRapid City
6h 30m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Feb 25
IDA2:40 pmIdaho Falls Fanning Field
6h 04m
1 stop
RAP8:44 pmRapid City
$274
United Airlines
Mar 21
RAP2:45 pmRapid City
6h 21m
1 stop
IDA9:06 pmIdaho Falls Fanning Field
Mar 28
IDA6:36 amIdaho Falls Fanning Field
6h 37m
1 stop
RAP1:13 pmRapid City
$309
United Airlines
Mar 15
RAP8:30 amRapid City
5h 00m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Mar 17
IDA5:30 pmIdaho Falls Fanning Field
4h 27m
1 stop
RAP9:57 pmRapid City
$475

Delta flights from South Dakota to Idaho Falls

Our best Delta deals on South Dakota to Idaho Falls flight tickets
Delta
Feb 16
RAP6:00 amRapid City
11h 49m
2 stops
IDA5:49 pmIdaho Falls Fanning Field
Feb 17
IDA5:25 amIdaho Falls Fanning Field
10h 19m
2 stops
RAP3:44 pmRapid City
$1,611
Delta
Mar 15
RAP11:03 amRapid City
7h 12m
2 stops
IDA6:15 pmIdaho Falls Fanning Field
Mar 17
IDA1:10 pmIdaho Falls Fanning Field
9h 15m
2 stops
RAP10:25 pmRapid City
$1,641
Delta
Mar 21
RAP11:03 amRapid City
7h 12m
2 stops
IDA6:15 pmIdaho Falls Fanning Field
Mar 28
IDA5:45 amIdaho Falls Fanning Field
9h 33m
2 stops
RAP3:18 pmRapid City
$1,656

momondo Fare Finder

 
Customize your flight search to find flights from South Dakota to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 9, 2026.
Use the filters below to find and compare flights from South Dakota to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 2/21

7:00 am-1:30 pm

1 stop6h 30m

Idaho Falls Fanning Field

Wed 2/25

2:40 pm-8:44 pm

1 stop6h 04m

$274

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 3/21

2:45 pm-9:06 pm

1 stop6h 21m

Idaho Falls Fanning Field

Sat 3/28

6:36 am-1:13 pm

1 stop6h 37m

$309

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 3/15

8:30 am-1:30 pm

1 stop5h 00m

Idaho Falls Fanning Field

Tue 3/17

5:30 pm-9:57 pm

1 stop4h 27m

$475

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 3/21

5:00 am-9:56 am

1 stop4h 56m

Idaho Falls Fanning Field

Sun 3/29

10:40 am-9:36 pm

2 stops10h 56m

$1,020

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sun 3/15

11:03 am-6:15 pm

2 stops7h 12m

Idaho Falls Fanning Field

Tue 3/17

1:10 pm-10:25 pm

2 stops9h 15m

$1,641

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 3/21

11:03 am-6:15 pm

2 stops7h 12m

Idaho Falls Fanning Field

Sat 3/28

5:45 am-3:18 pm

2 stops9h 33m

$1,656

Rapid CityIdaho Falls

RAP - IDA

RAPIDA

Rapid City

Sat 3/21

11:03 am-6:15 pm

2 stops7h 12m

Idaho Falls Fanning Field

Sun 3/29

5:45 am-3:18 pm

2 stops9h 33m

$1,672

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap South Dakota to Idaho Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Idaho Falls

Fastest flight time

4h 28m

Direct flights

None
The fastest flight from South Dakota to Idaho Falls takes 4h 28m
There are no direct flights from South Dakota to Idaho Falls. There are no popular flight routes from South Dakota to Idaho Falls.
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  • When did momondo last update prices for flights from South Dakota to Idaho Falls Fanning Field Airport?

    Prices for flights from South Dakota to Idaho Falls Fanning Field Airport are updated daily.

  • How many operators does momondo search for flights from South Dakota to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from South Dakota to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from South Dakota to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from South Dakota to Idaho Falls

Compare and see reviews for airlines that fly from South Dakota to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,262 reviews
Search United Airlines flights

  • How do I get Price Alerts for flights from South Dakota to Idaho Falls?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to South Dakota from Idaho Falls. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from South Dakota to Idaho Falls with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Idaho Falls?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from South Dakota to Idaho Falls for you.

Can I find flights from South Dakota to Idaho Falls with flexible booking policies on momondo?

Flights from South Dakota to Idaho Falls with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from South Dakota to Idaho Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Idaho Falls from South Dakota.

I’m not ready to book a flight from South Dakota to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from South Dakota are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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